Remove LoginAPI, because it does not belongs to JMAP server

lib/features/login/data/network/login_api.dart

@@ -1,28 +0,0 @@
-import 'dart:async';
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:core/core.dart';
-import 'package:dio/dio.dart';
-import 'package:model/model.dart';
-
-class LoginAPI {
-  final DioClient _dioClient;
-
-  LoginAPI(this._dioClient);
-
-  Future<UserProfileResponse> authenticationUser(Uri baseUrl, AccountRequest accountRequest) async {
-    final basicAuth = 'Basic ' + base64Encode(utf8.encode('${accountRequest.userName.userName}:${accountRequest.password.value}'));
-    final resultJson = await _dioClient.post(
-      Endpoint.authentication.generateAuthenticationUrl(baseUrl),
-      options: Options(headers: _buildHeaderRequestParam(basicAuth)),
-      data: accountRequest.toJson());
-    return UserProfileResponse.fromJson(resultJson);
-  }
-
-  Map<String, dynamic> _buildHeaderRequestParam(String authorizationHeader) {
-    final headerParam = _dioClient.getHeaders();
-    headerParam[HttpHeaders.authorizationHeader] = authorizationHeader;
-    return headerParam;
-  }
-}